Dopamine color air coated yarn

Abstract

The invention relates to the technical field of air coated yarns, in particular to a dopamine color air coated yarn, a preparation method of which comprises the steps of melt spinning, tensile deformation and air coating. Specifically, after dopamine color master batches are added into polyamide slices, melt spinning is carried out, and chinlon pre-oriented yarn POY is obtained; in the melt spinning process, the temperature of a melting screw is 260-270 DEG C, and the lowest temperature of the melting screw is increased by 1-2 DEG C from 260 DEG C every time the temperature is increased by 0.2% according to the proportion of the dopamine color master batch based on 4%; performing tensile deformation on the prepared chinlon pre-oriented yarn (POY) to obtain chinlon draw-textured yarn (DTY); and processing the chinlon draw textured yarn DTY and the colored spandex into the dopamine color air coated yarn through an air coating all-in-one machine.

Description

Technical Field

[0001] The invention relates to the technical field of air-coated yarns, in particular to a dopamine-colored air-coated yarn. Background Art

[0002] As the second largest synthetic fiber product in the textile field after polyester, nylon has been in increasing demand in recent years, and its production capacity has increased year by year. It has developed rapidly in the direction of fine denier, high speed, differentiation, and functionality. New varieties and new technologies have emerged in an endless stream, and new processes and new equipment have been used, and ecological and environmental awareness has been strengthened. The development efforts of nylon-spandex functional coated yarn products are far less than the level of domestic polyester factories. Domestic nylon chemical fiber production or nylon functional product manufacturers are not common enough, and most of them are concentrated on the production of conventional varieties. In fact, nylon's hydrophilicity, fiber wear resistance, and color fastness are better than polyester, and it is more suitable for use in human body underwear. Due to this characteristic, our company is doing differentiated research on sportswear.

[0003] With the continuous growth of people's consumption demand and the continuous pursuit of environmental protection and low carbon, people not only require beauty, durability and comfort, but also need to get a healthier standard of living. The application of differentiated products is growing day by day. At present, the consumption proportion of air-coated silk containing dopamine color system in the downstream market is not large, but in recent years, with the continuous pursuit of differentiated environmental protection theme products by consumers and the rise of personal consumption awareness, people's demand is not only beauty, durability and comfort, but also in line with the pursuit of modern healthy and low-carbon life. The absence of dopamine color air-coated silk products is a blue ocean. Our company's early research and development and production have created a new economic growth point for the company.

[0004] In order to meet differentiated market demands, the research and development of dopamine-colored air-coated yarns can not only increase the company's profit growth points, improve product competitiveness and economic benefits, but also enable the products to have bright and varied colors without going through dyeing and finishing in a dyeing factory, which not only saves energy but is also healthier for body contact.

[0005] For this reason, it is necessary to develop corresponding air-coated silk products with dopamine color system. Summary of the invention

[0006] The purpose of the present invention is to provide a dopamine color air-coated yarn and a preparation method thereof. This product is not only used to enrich the diversity of products, but more importantly, a coated yarn product with bright and varied colors without dyeing and finishing is developed. This product enriches the diversity of products, increases product competitiveness for the company, and creates more profit growth points.

[0007] Specifically, the present invention adopts the following technical solutions: A dopamine-colored air-coated yarn, the preparation method of which includes melt spinning, stretching deformation, and air coating; specifically, the steps are as follows: Select polyamide slices, then add dopamine color masterbatch into the polyamide slices, and add the masterbatch in a ratio of 4%-5% to the polyamide slices; after the polyamide slices mixed with the masterbatch are fully dried, melt spinning is used for spinning, firstly through screw melting, spinning box, spinneret, cooling side blowing, oiling and winding, and finally nylon pre-oriented yarn POY is obtained; During the melt spinning process, the temperature of the melt screw is 260-270°C, and according to the ratio of dopamine color masterbatch based on 4%, the minimum temperature of the melt screw increases by 1-2°C from 260°C for every 0.2% increase; The prepared nylon pre-oriented yarn POY is subjected to stretching and deformation to obtain nylon stretch-textured yarn DTY; The nylon drawn textured yarn DTY and colored spandex are processed into dopamine color air-coated yarn through an air-coated integrated machine.

[0008] Preferably, the dopamine color masterbatch contains the following components in parts by weight: 100 parts of polyamide chips, 5-10 parts of ethylene acrylic acid copolymer, 5-20 parts of dopamine pigment, and 5-10 parts of permanent magnetic particles.

[0009] Preferably, the permanent magnetic particles are made of nano-NdFeB or nano-SmFeN.

[0010] Preferably, the permanent magnetic particles are modified by the following method: Disperse 3-8g of silane coupling agent in 100ml of toluene solution, then add 10-20ml of ethanol and 5-10ml of water, then add 1-3g of unmodified permanent magnetic particles, stir ultrasonically at 50-60℃ for 2-3h, and finally dry at 60-70℃.

[0011] Preferably, the nylon pre-oriented yarn POY is used to prepare the nylon drawn textured yarn DTY using a texturing machine, and the specific steps are as follows: Nylon pre-oriented yarn POY passes through the cutter, the first roller, the spinning rod guide, the twist stopper, and then passes through the first hot box for heating and deformation, the cooling plate for cooling, the false twister for false twisting, and then passes through the second roller and the second hot box for shaping, and then passes through the third roller and the oiling roller for final winding; When POY passes through the texturizing machine hot box, the temperature of the first hot box is 165-178°C, the temperature of the cooling plate after the first hot box is 50-70°C, the cooling plate is arranged in the cooling chamber, the air temperature of the cooling chamber is controlled at 0-10°C, and the temperature of the filament is cooled to 70-75°C; the temperature of the second hot box is 25-28°C lower than that of the first hot box, and an intermittent heating roller is arranged after the second hot box, and the temperature of the intermittent heating roller is 5-10°C higher than that of the second hot box.

[0012] The temperature of the first hot box affects the curling and fluffiness of the yarn. Therefore, the temperature of the first hot box is set several degrees lower than the normal one. In order to make the yarn have sufficient rigidity, the yarn is cooled to 70-75℃. At the same time, in order to improve the toughness of the yarn during the cooling process, not only the cooling plate is used for cooling, but also the air is used for cooling, so as to avoid the yarn from breaking easily. Such coordinated operation makes the yarn have a certain rigidity and is conducive to the transmission of twist.

[0013] If the temperature of the second hot box is too high, the elasticity of the fiber will be affected, and the boiling water shrinkage will be reduced. For this reason, in order to maintain dimensional stability while ensuring the elasticity of the fiber, an intermittent heating roller is also used after the second hot box, so that the silk strips show inconsistency, which has a positive effect on the subsequent fiber color performance. The color of the fiber can be made more gorgeous. The appropriate elasticity and dimensional stability are conducive to the coordination with spandex when the empty bag integrated machine is used for empty bags, avoiding the lack of elasticity and the deterioration of the empty bag effect with spandex. Due to the scheme of the present invention, there is no need to consider the subsequent dyeing process, so the appropriate inconsistency is beneficial to the color performance of the product of the present invention.

[0014] Preferably, the oiling agent used for the oiling roller includes, by weight percentage: 40%-45% isocyanate modified alkyd resin, 30%-35% white oil, 10%-18% sorbitan monooleate, 2-5% dimethyl silicone oil type penetrant, 1%-3% fatty acid methyl ester sulfonate, 3%-8% branched secondary alcohol polyoxyethylene ether, and 1%-3% dialkyl dithiophosphate zinc.

[0015] Based on the fact that the present invention uses a masterbatch, and permanent magnetic particles are used in the masterbatch, in order to promote the bright color of the fiber, a special oiling agent is designed, which can resist wicking and avoid the problem of poor color performance of the fiber caused by wicking. The oiling rate is usually 1%-3%.

[0016] Preferably, the colored spandex is antibacterial colored spandex.

[0017] Compared with the prior art, the present invention has the following beneficial effects: It solves the problem of yarn's own color and can meet the color fastness and color diversity; The fibers are evenly arranged with masterbatch materials. The addition of masterbatch allows the nylon fibers to be used directly after washing and shaping after weaving, thus reducing the pollution and energy waste caused by the dyeing process. Since the color of colored nylon is the basic color and relatively monotonous, colored spandex is added for coating, so that two materials of different colors are mixed and coated to form a dopamine color, and the color can be adjusted according to the requirements of different customers; By using different colored POY, the process conditions can be adjusted on the air-covered integrated machine to produce air-covered yarns with different colors. DETAILED DESCRIPTION

[0018] It should be understood that the following description is not intended to limit the embodiments to one preferred embodiment. On the contrary, it is intended to cover alternatives, modifications and equivalents that may be included within the spirit and scope of the embodiments defined by the appended claims.

[0019] The company provides a dopamine-colored air-coated yarn, which can save the dyeing and finishing process, thereby reducing the pollution and energy waste caused by the dyeing process. A dopamine-colored air-coated yarn, the preparation method of which includes melt spinning, stretching deformation, and air coating; Specifically, the steps are as follows: (1) Select polyamide chips, and then add dopamine color masterbatch into the polyamide chips, the masterbatch is added in a ratio of 4% to 5% to the polyamide chips; after the polyamide chips mixed with the masterbatch are fully dried, melt spinning is used for spinning, firstly through screw melting, spinning box, spinneret, cooling side blowing, oiling and winding, and finally nylon pre-oriented yarn POY is obtained; During the melt spinning process, the temperature of the melt screw is 260-270°C, and according to the ratio of dopamine color masterbatch based on 4%, the minimum temperature of the melt screw increases by 1-2°C from 260°C for every 0.2% increase; The dopamine color masterbatch contains the following components in parts by weight: 100 parts of polyamide chips, 5-10 parts of ethylene acrylic acid copolymer, 5-20 parts of dopamine pigment, and 5-10 parts of permanent magnetic particles. The permanent magnetic particles are made of nano samarium iron nitrogen, and the permanent magnetic particles are modified by the following method: 3-8g of silane coupling agent is dispersed in 100ml of toluene solution, then 10-20ml of ethanol and 5-10ml of water are added thereto, and then 1-3g of unmodified permanent magnetic particles are added thereto, ultrasonically stirred at 50-60°C for 2-3h, and finally dried at 60-70°C.

[0020] (2) The prepared nylon pre-oriented yarn POY is subjected to stretching and deformation to obtain nylon stretched textured yarn DTY; The preparation of nylon pre-oriented yarn POY into nylon drawn textured yarn DTY is carried out using a texturing machine. The specific steps are as follows: Nylon pre-oriented yarn POY passes through the cutter, the first roller, the spinning rod guide, the twist stopper, and then passes through the first hot box for heating and deformation, the cooling plate for cooling, the false twister for false twisting, and then passes through the second roller and the second hot box for shaping, and then passes through the third roller and the oiling roller for final winding; When POY passes through the hot box of the texturing machine, the temperature of the first hot box is 165-178°C, the temperature of the cooling plate after the first hot box is 50-70°C, the cooling plate is arranged in the cooling chamber, the air temperature of the cooling chamber is controlled at 0-10°C, and the temperature of the filament is cooled to 70-75°C; the temperature of the second hot box is 25-28°C lower than that of the first hot box, and an intermittent heating roller is arranged after the second hot box, and the temperature of the intermittent heating roller is 5-10°C higher than that of the second hot box; The oiling agent used for the oiling roller includes, by weight percentage: 40%-45% of isocyanate modified alkyd resin, 30%-35% of white oil, 10%-18% of sorbitan monooleate, 2%-5% of dimethyl silicone oil type penetrant, 1%-3% of fatty acid methyl ester sulfonate, 3%-8% of branched secondary alcohol polyoxyethylene ether, and 1%-3% of dialkyl dithiophosphate zinc.

[0021] (3) The nylon stretched textured yarn DTY and the antibacterial colored spandex are processed into dopamine-colored air-coated yarn through an air-coated integrated machine.

[0022] The following are specific implementation cases.

[0023] Embodiment 1: A dopamine-colored air-coated yarn is prepared through melt spinning, stretching deformation, and air coating steps, specifically: (1) Select polyamide chips, and then add dopamine color masterbatch into the polyamide chips, the masterbatch is added in a ratio of 4.5% to the polyamide chips; after the polyamide chips mixed with the masterbatch are fully dried, melt spinning is used for spinning, firstly through screw melting, spinning box, spinneret, cooling side blowing, oiling and winding, and finally nylon pre-oriented yarn POY is obtained; During the melt spinning process, the temperature of the melt screw is 260-270°C, and according to the ratio of dopamine color masterbatch based on 4%, for every 0.1% increase, the minimum temperature of the melt screw increases by 1-2°C from 260°C; at this temperature, 263-265°C is selected.

[0024] The dopamine color masterbatch contains the following components in parts by weight: 100 parts of polyamide chips, 5 parts of ethylene acrylic acid copolymer, 20 parts of dopamine pigment, and 10 parts of permanent magnetic particles. The permanent magnetic particles are made of nano samarium iron nitrogen, and the permanent magnetic particles are modified by the following method: 3g of silane coupling agent is dispersed in 100ml of toluene solution, then 10ml of ethanol and 5ml of water are added thereto, and then 1g of unmodified permanent magnetic particles are added thereto, ultrasonically stirred at 60°C for 3h, and finally dried at 70°C.

[0025] (2) The prepared nylon pre-oriented yarn POY is subjected to stretching and deformation to obtain nylon stretched textured yarn DTY; The preparation of nylon pre-oriented yarn POY into nylon drawn textured yarn DTY is carried out using a texturing machine. The specific steps are as follows: Nylon pre-oriented yarn POY passes through the cutter, the first roller, the spinning rod guide, the twist stopper, and then passes through the first hot box for heating and deformation, the cooling plate for cooling, the false twister for false twisting, and then passes through the second roller and the second hot box for shaping, and then passes through the third roller and the oiling roller for final winding; When POY passes through the texturing machine heat box, the temperature of the first heat box is 175-178°C, the temperature of the cooling plate after the first heat box is 55°C, the cooling plate is arranged in the cooling chamber, the air temperature of the cooling chamber is controlled at 10°C, and the temperature of the filament is cooled to 70-75°C; the temperature of the second heat box is 25-28°C lower than that of the first heat box, and an intermittent heating roller is arranged after the second heat box, and the temperature of the intermittent heating roller is 5°C higher than that of the second heat box; The oiling agent used for the oiling roller includes, by weight percentage, 40% of isocyanate-modified alkyd resin, 30% of white oil, 18% of dehydrated sorbitan monooleate, 5% of dimethyl silicone oil-type penetrant, 3% of fatty acid methyl ester sulfonate, 3% of branched secondary alcohol polyoxyethylene ether, and 1% of dialkyl dithiophosphate zinc, and the oiling agent does not contain water.

[0026] (3) The nylon stretched textured yarn DTY and the antibacterial colored spandex are processed into dopamine color air-coated yarn through an air-coated integrated machine; the specification of DTY is 90D / 36F, and the specification of spandex is 30D.

[0027] Embodiment 2: A dopamine-colored air-coated yarn is prepared through melt spinning, stretching deformation, and air coating steps, specifically: (1) Select polyamide chips, and then add dopamine color masterbatch into the polyamide chips, the masterbatch is added in a ratio of 5% to the polyamide chips; after the polyamide chips mixed with the masterbatch are fully dried, melt spinning is used for spinning, first through screw melting, spinning box, spinneret, cooling side blowing, oiling and winding, and finally nylon pre-oriented yarn POY is obtained; During the melt spinning process, the temperature of the melt screw is 260-270°C, and according to the ratio of dopamine color masterbatch based on 4%, the minimum temperature of the melt screw increases by 1-2°C from 260°C for every 0.2% increase; here, the temperature is selected as 266-270°C according to this principle; The dopamine color masterbatch contains the following components in parts by weight: 100 parts of polyamide chips, 10 parts of ethylene acrylic acid copolymer, 20 parts of dopamine pigment, and 5 parts of permanent magnetic particles. The permanent magnetic particles are made of nano samarium iron nitrogen, and the permanent magnetic particles are modified by the following method: 8g of silane coupling agent is dispersed in 100ml of toluene solution, then 20ml of ethanol and 5ml of water are added thereto, and then 3g of unmodified permanent magnetic particles are added thereto, ultrasonically stirred at 50°C for 3h, and finally dried at 60°C.

[0028] (2) The prepared nylon pre-oriented yarn POY is stretched and deformed to obtain nylon stretched textured yarn DTY; the nylon pre-oriented yarn POY is used to prepare nylon stretched textured yarn DTY using a texturing machine, and the specific steps are as follows: Nylon pre-oriented yarn POY passes through the cutter, the first roller, the spinning rod guide, the twist stopper, and then passes through the first hot box for heating and deformation, the cooling plate for cooling, the false twister for false twisting, and then passes through the second roller and the second hot box for shaping, and then passes through the third roller and the oiling roller for final winding; When POY passes through the texturing machine heat box, the temperature of the first heat box is 168-175℃, the temperature of the cooling plate behind the first heat box is 50-70℃, the cooling plate is arranged in the cooling chamber, the air temperature of the cooling chamber is controlled at 5±3℃, and the temperature of the yarn is cooled to 73±2℃; the temperature of the second heat box is 25-28℃ lower than that of the first heat box, and an intermittent heating roller is arranged behind the second heat box, and the temperature of the intermittent heating roller is 10℃ higher than that of the second heat box; The oiling agent used for the oiling roller includes, by weight percentage: 45% of isocyanate-modified alkyd resin, 31% of white oil, 10% of dehydrated sorbitan monooleate, 2% of dimethyl silicone oil-type penetrant, 1% of fatty acid methyl ester sulfonate, 8% of branched secondary alcohol polyoxyethylene ether, and 3% of dialkyl dithiophosphate zinc.

[0029] (3) The nylon stretched textured yarn DTY and the antibacterial colored spandex are processed into dopamine color air-coated yarn through an air-coated integrated machine; the specification of DTY is 90D / 36F, and the specification of spandex is 30D.

[0030] The prepared coated wire product has the following properties: 1. Network degree / (unit / meter): M1(1±7%) 2. Linear density deviation rate / %±2.5 3. Coefficient of variation of elongation at break (CV) / %≤8.0 4. Elongation at break / %: M3±2.5 5. Breaking strength (cN / dtex) ≥ 3.3.

[0031] At present, the consumption proportion of dopamine-colored air-coated silk in the downstream market is not large. However, in recent years, with the continuous pursuit of differentiated environmentally friendly products by consumers and the rise of personal consumption awareness, people’s needs are not only beautiful, durable and comfortable, but also in line with the pursuit of modern healthy and low-carbon life. The absence of dopamine-colored air-coated silk products is a blue ocean. Our company’s early research and development and production have created a new economic growth point for the company.

[0032] It is obvious to those skilled in the art that certain modifications, combinations and variations can be made based on the above teachings.

Claims

1. A dopamine color air-coated yarn, characterized in that: The preparation method includes melt spinning, stretching deformation, and air coating; specifically, the steps are as follows: Select polyamide slices, then add dopamine color masterbatch into the polyamide slices, and add the masterbatch in a ratio of 4%-5% to the polyamide slices; after the polyamide slices mixed with the masterbatch are fully dried, melt spinning is used for spinning, firstly through screw melting, spinning box, spinneret, cooling side blowing, oiling and winding, and finally nylon pre-oriented yarn POY is obtained; During the melt spinning process, the temperature of the melt screw is 260-270°C, and according to the ratio of dopamine color masterbatch based on 4%, the minimum temperature of the melt screw increases by 1-2°C from 260°C for every 0.2% increase; The prepared nylon pre-oriented yarn POY is subjected to stretching and deformation to obtain nylon stretch-textured yarn DTY; The nylon drawn textured yarn DTY and colored spandex are processed into dopamine color air-coated yarn through an air-coated integrated machine.

2. The dopamine color air-coated yarn according to claim 1, characterized in that: The dopamine color masterbatch contains the following components in parts by weight: 100 parts of polyamide slices, 5-10 parts of ethylene acrylic acid copolymer, 5-20 parts of dopamine pigment, and 5-10 parts of permanent magnetic particles.

3. The dopamine color air-coated yarn according to claim 2, characterized in that: The permanent magnetic particles are made of nano-NdFeB or nano-SmFeN.

4. The dopamine color air-coated yarn according to claim 3, characterized in that: The permanent magnetic particles are modified by the following method: Disperse 3-8g of silane coupling agent in 100ml of toluene solution, then add 10-20ml of ethanol and 5-10ml of water, then add 1-3g of unmodified permanent magnetic particles, stir ultrasonically at 50-60℃ for 2-3h, and finally dry at 60-70℃.

5. The dopamine color air-coated yarn according to claim 1, characterized in that: The preparation of nylon pre-oriented yarn POY into nylon drawn textured yarn DTY is carried out using a texturing machine. The specific steps are as follows: Nylon pre-oriented yarn POY passes through the cutter, the first roller, the spinning rod guide, the twist stopper, and then passes through the first hot box for heating and deformation, the cooling plate for cooling, the false twister for false twisting, and then passes through the second roller and the second hot box for shaping, and then passes through the third roller and the oiling roller for final winding; When POY passes through the texturizing machine hot box, the temperature of the first hot box is 165-178°C, the temperature of the cooling plate after the first hot box is 50-70°C, the cooling plate is arranged in the cooling chamber, the air temperature of the cooling chamber is controlled at 0-10°C, and the temperature of the filament is cooled to 70-75°C; the temperature of the second hot box is 25-28°C lower than that of the first hot box, and an intermittent heating roller is arranged after the second hot box, and the temperature of the intermittent heating roller is 5-10°C higher than that of the second hot box.

6. The dopamine color air-coated yarn according to claim 1, characterized in that: The oiling agent used for the oiling roller includes, by weight percentage: 40%-45% of isocyanate modified alkyd resin, 30%-35% of white oil, 10%-18% of sorbitan monooleate, 2%-5% of dimethyl silicone oil type penetrant, 1%-3% of fatty acid methyl ester sulfonate, 3%-8% of branched secondary alcohol polyoxyethylene ether, and 1%-3% of dialkyl dithiophosphate zinc.

7. The dopamine color air-coated yarn according to claim 1, characterized in that: The colored spandex is antibacterial colored spandex.